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Message-ID: <20210703185540.5b6bec20@aktux>
Date: Sat, 3 Jul 2021 18:55:40 +0200
From: Andreas Kemnade <andreas@...nade.info>
To: Jonathan Cameron <jic23@...nel.org>
Cc: Discussions about the Letux Kernel <letux-kernel@...nphoenux.org>,
devicetree@...r.kernel.org, lars@...afoo.de,
linux-pm@...r.kernel.org, linux-iio@...r.kernel.org,
linux-kernel@...r.kernel.org, sre@...nel.org, robh+dt@...nel.org,
leonard.crestez@....com, lee.jones@...aro.org
Subject: Re: [Letux-kernel] [PATCH 0/4] mfd: rn5t618: Extend ADC support
On Sat, 3 Jul 2021 18:39:40 +0200
Andreas Kemnade <andreas@...nade.info> wrote:
> Hi,
>
> On Sat, 3 Jul 2021 16:59:50 +0100
> Jonathan Cameron <jic23@...nel.org> wrote:
>
> > On Sat, 3 Jul 2021 10:42:20 +0200
> > Andreas Kemnade <andreas@...nade.info> wrote:
> >
> > > Add devicetree support so that consumers can reference the channels
> > > via devicetree, especially the power subdevice can make use of that
> > > to provide voltage_now properties.
> >
> > Does the mapping vary from board to board? Often these mappings are
> > internal to the chip so might as well be provided hard coded in the
> > relevant drivers rather than via DT. See drivers that have iio_map
> > structure arrays.
> >
> Most things are internal to the chip, but
> AIN1/AIN0 are external and could be connected to anything.
>
hmm, iio_map stuff looks nice, so before messing with devicetree,
I could solve 90% of the problem by just using iio_map? For my use
cases it is enough to have the internal stuff at the moment. That would
simplify stuff a lot.
So I could go forward with the iio_map stuff now, and if there is a use
case for AIN1/0, the devicetree stuff can be added later?
Regards,
Andreas
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